听力篇章_2

Questions 19 to 21 are based on the passage you have just heard.

19.

What do we learn from the passage about the North Atlantic right whale?

It gives birth to several babies at a time.

It is the least protected mammal species.

Its breeding grounds are now better preserved.

Its population is now showing signs of increase. D) 它的数量现在有增加的迹象。

20.

What has caused the decline of the whale population in recent years?

Global warming.

Polluted seawaters.

Commercial hunting.

Decreasing birthrates.

21.

Why do the whales travel to the northeast coast of America in the early spring?

To mate.

To look for food.

To escape hunters.

To seek breeding grounds.

CET4